ENCLOSURE RECOMMENDATIONS
Optimum Sealed Volume
Internal volume: 1.32ft3 / 37.38L
Enclosure "Q": .95
-3dB response: 41Hz
Efficiency: 88.4dB
Maximum power handling: 300 watts db
Cu. feet/liters “Q” small sealed volume: 1.01
large sealed volume: .71
-3dB
42Hz
37Hz
14.5"
Efficiency
88.7dB
87.4dB
15.6"
PE
300 watts
300 watts
Optimum Vented Volume
Internal volume: 2.6ft3 / 73.62L
Tuning frequency: 27Hz
Port (D x L): 4" x 14.5"
-3dB response: 30Hz
Efficiency: 90dB
Maximum power handling: 300 watts
Cu. feet/liters Tune to Port db small vented volume: 2.2/62.3 28Hz 4” x 16.3” large vented volume: 3.3/93.45 25Hz 4” x 13”
16.5"
-3dB
33Hz
27Hz
22"
Efficiency PE
90.1dB
300 watts
89.2dB
275 watts
Optimum Bandpass Volume
Front volume: 1.5ft3 / 42.48L
Rear volume: 1ft3 / 28.32L
Tuning frequency: 59.9Hz
Port (D x L): 6" x 9"
-3dB response: 38 - 89Hz
Efficiency: 93.8dB
Maximum power handling: 275 watts db
Front
11.5"
Rear
8.2"
16.5" 21.95"
Front cu. ft/liters Rear cu.ft/liters Tune to
1.36/38.51
1.43/40.49
1.61/45.59
1.37/38.79
55.6Hz
57Hz
Port
6”x 13”
-3dB
34 – 76Hz
6"x 11.25” 36 – 80Hz
Efficiency
91.7dB
92dB
PE
250 watts
300 watts
*Note: Dimensions given require the use of 0.75" (19mm) board.
**Be sure to add in .061ft3 / 1.73L for driver displacement in all "Other" enclosures.
***WARNING: Due to long port length, slot porting will most likely be needed. Tube ports are for illustration purposes only.
DAMPING MATERIAL
The most common damping materials used are Dacron and Polyfill. Reclaimed fiber underlay has been discovered to be an excellent substitute especially when glued directly to the walls of the enclosure. Fiberglass may be used, but please limit usage to sealed enclosures only. When used in vented/bandpass enclosures, fiberglass fibers escaping through the port may be hazardous to your health.
SEALED ENCLOSURE
VENTED ENCLOSURE
BANDPASS (sealed chamber)
BANDPASS (vented chamber)
DACRON/POLYFILL loosely fill the enclosure line 3-5 walls line 3 walls
UNDERLAY
line 5 walls
line 1-3 wall
line 1-3 wall line 1 wall (optional) line 1 wall (optional)
SPECIFICATIONS
FIBERGLASS line 5 walls
Please limit the use of fiberglass to sealed enclosures only
Model
Driver description
Mounting depth, in./mm
Cutout dimensions, in./mm
Impedance
Nominal power handling
Maximum power handling (PE)
Dynamic power handling
Voice coil – size
Magnet weight
Frequency response
Resonance frequency (fs)
QTS
QMS
QES
VAS, ft./liter
X-max, in./mm
Efficiency (2.83V/1M)
DBW12D
12” Subwoofer, Dual Voice Coil
5.375/136.6
11.1/282.08
4 ohms per coil
200watts
300 watts
800 watts
2”, 4 layer
38 oz.
22Hz to 500Hz
25.7Hz
.511
8.19
.545
3.93/111.25
.315/8
87.3dB
POWER RATINGS
Rating the power handling of subwoofers is not a difficult task. However, understanding power ratings is often confusing. Many times the Maximum Power Ratings are viewed as the RMS power handling of the driver, when in actuality Maximum is generally the break point of the driver. This has lead Crossfire to come up with a system to rating the power necessary to drive our subwoofers. Please read the following cautiously before choosing your amplifier.
Nominal power handling
-Nominal power handling is the power rating given by Crossfire at which the subwoofer will experience minimal mechanical degradation over time when using a recommended enclosure. In other words, this is the recommended power to be used per woofer to assure long life.
Maximum power handling (PE)
-Maximum power handling is the power rating given by Crossfire at which the subwoofer could experience a high amount of mechanical degradation that may lead to possible failure over time when using a recommended enclosure. In other words, do not exceed this power level for extended periods of time.
Dynamic power handling
-Dynamic power handling is the power rating given by Crossfire for peak transients and short bursts.
Continuous playing at or above this level will cause mechanical failure and/or thermal failure. In other
This could possibly void your warranty.
words, this power level should never be attained with the exceptions of approved SPL competition vehicles.
